Posting for a newbie friend who's got the weirdest problem I've ever seen. Opening the Applications folder on his MacBook causes two installers to launch and run automatically. One is for ProTools, the other is for Adobe Flash Player. Both apps have already been installed. There are no Folder Actions assigned to the Applications folder, and I can't think of anything else that could be causing this to happen. The installers don't appear in the Force Quit Applications box. Force-Quitting Finder is the only way I've found out of letting the installers run, but when Finder relaunches, the Applications folder window doesn't stay open, so this puts me back where I started. He's using 10.9.5. Thanks for any help!